From mboxrd@z Thu Jan 1 00:00:00 1970 Received: by wr-out-0506.google.com with SMTP id i31so172029wra for ; Wed, 15 Nov 2006 16:44:59 -0800 (PST) Message-ID: <9a8748490611151644m5420fd9claf8212f98a6ad4e2@mail.gmail.com> Date: Thu, 16 Nov 2006 01:44:58 +0100 From: "Jesper Juhl" Subject: Re: [patch 2/2] enables booting a NUMA system where some nodes have no memory In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <20061115193049.3457b44c@localhost> <20061115193437.25cdc371@localhost> <455B8F3A.6030503@mbligh.org> Sender: owner-linux-mm@kvack.org Return-Path: To: Christoph Lameter Cc: Martin Bligh , Christian Krafft , linux-mm@kvack.org, linux-kernel@vger.kernel.org List-ID: On 15/11/06, Christoph Lameter wrote: > On Wed, 15 Nov 2006, Martin Bligh wrote: > > > A node is an arbitrary container object containing one or more of: > > > > CPUs > > Memory > > IO bus > > > > It does not have to contain memory. > > I have never seen a node on Linux without memory. I have seen nodes > without processors and without I/O but not without memory.This seems to be > something new? > What about SMP Opteron boards that have RAM slots for each CPU? With two (or more) CPU's and only memory slots populated for one of them, wouldn't that count as multiple NUMA nodes but only one of them with memory? That would seem to be a pretty common thing that could happen. -- Jesper Juhl Don't top-post http://www.catb.org/~esr/jargon/html/T/top-post.html Plain text mails only, please http://www.expita.com/nomime.html -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org